Oscar, Katia et Martin partent chasser le monstre du lac à Providence, Merlou. Ils découvrent que le journaliste Timothy voulait devenir célèbre et que le maire Rudolf avait mis le lac en danger.
Oscar, Katia and Martin go hunting the monster of the lake in Providence, Merlou. They discover that journalist Timothy wanted to become famous and that mayor Rudolf had put the lake at risk.
